Apparatus for the laying and rolling out of coating or paving materials

ABSTRACT

The present invention relates to an apparatus for laying and rolling out coating or paving materials, comprising a single means in the form of a roller for laying as well as rolling out and leveling fluid and solid materials within a wide range of temperatures, said roller having a shield plate to prevent the material being laid to pass over the overside of said roller.

United States Patent Lindskog Mar. 19, 1974 [5 APPARATUS FOR THE LAYING AND 1.533.085 4/1925 men 94/45 R ROLLING OUT OF COATING OR PAVING g I g 0e r1ng.. MATERIALS 1,897.605 2/1933 Clifford... 94 44 [75] Inventor: Bertil Nils Lindskog, Backaskog, 2.252.188 8/1941 Krehb el 9 5 R Sweden 2,794,274 6/1957 Robinson 94/45 R 3.091.999 6/1963 MacDonald 94/44 [73] Assignee: System Research Inc., New York,

Primary ExaminerNile C. Byers, Jr. [22] Filed; Oct. 22, 1970 Attorney, Agent, or Firm-Bucknam and Archer App]. No.: 83,012

[52] US. Cl. 404/103 [51] Int. Cl. E01c 19/28 [58] Field of Search 94/44, 45, 46, 50

[5 6] References Cited UNITED STATES PATENTS 2.996.963 8/1961 Stultz 1.270.725 6/1918 Gratton 94/50 R ABSTRACT The present invention relates to an apparatus for layin g and rqlling out cgating or paving materials, comprising a single means in the fbrm bra roller ior laying as well as rolling out and leveling fluid and solid materials within a wide range of temperatures, said roller having a shield plate to prevent the material being laid to pass 'over the overside of said roller.

' 4 Claims, 2 Drawing Figures APPARATUS FOR THE LAYING AND ROLLING OUT OF COATING R PAVING MATERIALS This invention relates to an apparatus for the laying and rolling out of coating or paving materials such as tenacious materials in the form of rubber asphalt compositions, plastic compositions, moulding asphalt, etc., but also more easy-flowing materials such as concrete finishing, sand, gravel and the like. Moreover, a modification of the apparatus according to the invention may be used for the application of a coating, specially of a tenacious type, onto any substrate such as webs or the like. During the rolling a reinforcement may be incorporated in the paving material.

Many devices are known in the art for laying, rolling and leveling concrete,-asphalt and the like onto roads. It is also known to reinforce the concrete by rolling out a netting with the concrete being poured through the meshes.

The apparatus of this application is particularly advantageous with tenacious rubber based surface materials, that is compositions which comprise a mixture of rubber particles, asphalt or a solution of asphalt and a filler.

One object of the present invention is to provide an apparatus in order to eliminate the laborious paving by hand of such and other tenacious compositions and dry materials, which apparatus not only lays out the masses or compositions but also levels and rolls the same in one and the same working step. 1 When the paving material is cold or only has a moderate temperature a heating of the roller is not necessary as said roller clue to its relatively small diameter and consequently low heat losses rapidly attains the temperature of the paving material. However, when the material to be laid requires a high temperature, for instane 400 to 480F, the roller preferably should be heated. This may be achieved by circulating hot oil or air through the roller.

Due to the small diameter of the roller, for most practical applications about 3 inches to 3 %inches, the heat lost is small and therefore only a small heat quantity has to be supplied in order to obtain a smooth surface.

According to one aspect of the invention the rolleris vertically adjustable in order to control the thickness of the layer. In this connection it should be pointed out that the roller alone levels and rolls the material and determines the thickness of the layer. Moreover, the circumferential speed of the roller may be controlled by means of a transmission as practical tests hae proved a relation between the speed of the roller and the physical properties of the surface material. The roller may be lubricated whenever the material has a tendency to stick to the same.

According to a modification of the invention a reinforcement of the coating material may be inserted into the coating material during the spreading of the same, such coating material comprising a web of synthetic plastic, glass fibers or the like which web is pressed down into the coating material by the roller for said coating and a second roller following said first roller. However, such a reinforcement is preferably achieved by introducing into said coating material a quantity of short cut glass fibers.

It should be noted, however, that the addition of such short fibers further increase the tenacity of the composition and adds to the difficulty of laying out the same.

Such an addition of a reinforcing material is however very desirable in view of the weak surface nature of the rubber asphalt composition, specially when the paving is used by sportsmen having hobnailed shoes, such nails having a tendency to remove the material from the surface. Such a tenacious material containing cut glass fibers can still without diffuclty be laid out by means of the apparatus according to the invention.

In this connection it should be pointed out that sand and gravel or a mixture of such materials rapidly may be laid out to form a smooth subsurface for slabs such as concrete slabs for roads and sidewalks. Further, a smooth finish of concrete may be laid out.

An essential advantage according to the invention comprises the possibility to lay out traffic lines at the same time as the main surface is laid, said lines having the same thickness as said main material. This step is not only time saving but also prevents the abrasion of such lines and a possible cutting away of material for making grooves for a colored mass for such lines.

In order to allow a smooth laying when the machine is run through curves the non-driven end of the roller is releasably journalled so that the roller automatically follows'the curve.

Normally no hopper is arranged on the machine and therefore the construction maybe kept very light so that one person standing on the machine can drive the same manually without difficulty. Of course, a motor may be installed as a driving means.

When the width of the lane to be laid is within moderate ranges such as l to 3 yards the material may easily be laid and spread by means of shovels before the roller at the same speed as the machine is moving forwards. Of course, the material also may be laid out by hopper means arranged on the machine or on a tractor running before the machine.

Depending on the material to be laid the speed of the machine may vary between 1.7 to 3.3 yards per minute. An essential factor for fluid materials is the consistence or viscosity of the same. An area between 87 and 230 sq. ft may thus be laid per hour and 1 yard width of the roller.

Further objects and advantages of the invention are set out in the following description, reference being made to the accompanying drawings in which FIG. 1 schematically shows a side view of an apparatus according to the invention for paving purposes, and

FIG. 2 a front view of the same apparatus in a perspective view.

Referring to FIG. 1 the apparatus according to the invention comprises a frame 9 on which couples of wheels 8 and 24 are arranged in suitable bearings, said wheels preferably being arranged to run on side forms or rails l, for instance with T-Form. In order to facilate the manipulation of such rails it may be recommended to use rails made from aluminium or alloys thereof. Further, the wheels keep the frame at a desired dis tance from the substrate or bottoming. Moreover, the frame 9 is arranged to carry a load 14 if necessary for an even leveling and rolling of the composition.

At the front end of the frame (that is in the travelling direction as indicated by the arrow) two longitudinally and preferably adjustable side wall plates 10 are arranged. Between said plates 10 a transverse plate 11 is arranged above the bottoming or substructure at a distance corresponding to the desired thickness of the a roller 2 arranged behind said plate 11. Said roller 2 is journalled in bearings at its ends in opposite beams of the frame 9 immediately behind said plate 11. The

roller has a smooth surface, for instance obtained by turning.

Alternatively said roller 2 may be made of a metal sheet, preferably a copper sheet; Due to the good heat conductivity of copper a roller made thereof rapidly attains the temperature of the preheated paving composition whereby the rolling is facilitated.

At the ends of said roller wheels 24 having a smaller diameter than said roller are coaxially mounted or made by turning said ends, said wheels running on said rails 1. Through this arrangement'the roller is imparted a higher circumferential velocity than the wheels. Practical paving tests have shown that this feature is of importance, especially when the coating composition is tenacious.

A chain wheel 15 is secured to the shaft of said roller and by means of a chain 16 connected with a second chain wheel 6 which may be manually driven by means of a hand crank 17 or by means of a motor, not shown, preferably an electric motor.

In order to prevent adherence of the coating composition to the roller 2 said roller is in contact with a roller which may have a covering of lambs hide or other absorbing material for a lubricant such as soap water, light petroleum or the like. The lubricant is fed to the roller 5 from a container 7 through a pipe 20 having a valve 13. The pipe 20 opens into a transverse conduit 22 running over the length of the roller 5 and being provided with orifices 23. The valve 13 may be regulated by means of a control lever 18. The roller 5 is driven by a belt 12 connected to the wheel 24.

According to the above mentioned embodiment for reinforcing said laid out and rolled out strip a roll 3 with reinforcing web is mounted in the frame 21. The web of reinforcing'm aterial is guided in front of the roller 2 and beneath the same and backwards to be pressed down into the mass by means of a preferably vertically adjustable roller 4, preferably provided with cams. The roller 4 also is in engagement with said lubricating roller 5 in order to prevent sticking of the mass to said roller. In this connection may be mentioned that lubricant need not be continuously supplied to the lubricating roller 5 but that such supply generally only is needed during the starting period of paving.

In use the paving mass is supplied to the space between plates and 11 and the subsurface. When the machine is moved forwards the material is rolled forwards and at the same time pressed down and rolled out by means of the roller 2 to the thickness desired. During the rolling the material is prevented to pass over the overside of roller by means of the plate 11. At the same time the reinforcing may be rolled down into the paving material. Conventional means may be used to make the side plates vertically adjustable.

According to one aspect of the invention the roller 2.

is vertically adjustable and journalled in adjustable means and drivable over a transmission (not shown) connected to the driving means for the machine. The roller is vertically adjustable Moreover. the roller may be connected to a source of heat (not shown) for circulating a heated fluid through the same in case the paving material should need a high temperature for laying, for instance 400 to 480 F. As a source of heat circulating heated oil may be used.

For the laying of traffic lines during the paving operation a narrow pocket may be mounted on the plate 1 1, said pocket comprising two parallel plates extending as far downwards as the side plates 10. Then a different colored material is introduced into said pocket. During laying, the traffic line is laid to the same depth as the main paving material.

In order to obtain a smooth paving when the machine is run through curves one end of said roller is disengaged so that the roller freely turns when turning the machine.

The main feature of the invention, however, is the roller which works, presses down and rolls out the material in a single step without the need for other leveling means and road rollers.

Of course, several modifications may be made within the scope of the invention as set out in the accompanying claims. Further, as already mentioned the principle above described may be used for applying a covering or finish of concrete or for covering of webs with synthetic plastic material.

Moreover, the apparatus may be provided with oscillating means, either for the leveling plate 1 1 and/or the roller 2, such means facilitating the laying of compositions of a more liquid nature.

What I claim and desire to secure by Letters Patent 1.An apparatus for laying, leveling and rolling tenacious solid rubber based surface materials in a single step on a subsurface comprising a movable frame having front feed means mounted thereon and leveling means operatively related to said frame for leveling the material during forward moving of the apparatus, said leveling means including a roller located in the rear of said feed means, said roller having a diameter of about 3 inch to 3- /4 inch, said feed means depositing the material in a space in front of said roller, said roller serving as leveling means as well as rolling means, said frame having supporting wheels located at the rear of said feed means and of said roller, said frame further including at least one roller drive wheel for driving the roller at a peripheral rotational speed greater than the rotational speed of the drive wheel, said roller and said drive wheel being coaxial.

2. An apparatus according to claim 1, whbrein means are provided for supply of lubricant to the roller.

3. An apparatus according to claim 1, wherein a roll with flexible reinforcing material is mounted above said roller, said reinforcing material being guided in front of and underneath said roller and backwards for being rolled down into said surface material.

4. The apparatus according to claim 1, wherein said drive wheel further includes a chain wheel mounted coaxially therewith for manual driving of said roller.

11 i 1' ll 

1. An apparatus for laying, leveling and rolling tenacious solid rubber based surface materials in a single step on a subsurface comprising a movable frame having front feed means mounted thereon and leveling means operatively related to said frame for leveling the material during forward moving of the apparatus, said leveling means including a roller located in the rear of said feed means, said roller having a diameter of about 3 inch to 3- 1/4 inch, said feed means depositing the material in a space in front of said roller, said roller serving as leveling means as well as rolling means, said frame having supporting wheels located at the rear of said feed means and of said roller, said frame further including at least one roller drive wheel for driving the roller at a peripheral rotational speed greater than the rotational speed of the drive wheel, said roller and said drive wheel being coaxial.
 2. An apparatus according to claim 1, whbrein means are provided for supply of lubricant to the roller.
 3. An apparatus according to claim 1, wherein a roll with flexible reinforcing material is mounted above said roller, said reinforcing material being guided in front of and underneath said roller and backwards for being rolled down into said surface material.
 4. The apparatus according to claim 1, wherein said drive wheel further includes a chain wheel mounted coaxially therewith for manual driving of said roller. 